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9). What makes an action potential (AP) rise from -70 mV to +30 mV? What makes...

9). What makes an action potential (AP) rise from -70 mV to +30 mV? What makes it drop again to -70 mV after this +30 mV peak?

10). List two (2) ways in which an action potential (AP) is different from a graded potential (GP).

11). Explain why myelinated nerve fibers conduct signals much faster than unmyelinated nerve fibers.

12). What is meant by the anterior (ventral) & posterior (dorsal) roots of a spinal nerve? Which of these is sensory & which is motor?

Science   Anatomy-And-Physiology   
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